package com.dang.alex.service;

import java.util.List;

import com.dang.alex.model.Book;
import com.dang.alex.model.Product;

public interface ProductService {
	public Book findById (int id)throws Exception;
	public List<Book> findAll ()throws Exception;
	public List<Product> findByHot (int id)throws Exception;
	public List<Book> findByNew (int id)throws Exception;
}
